Feank manning



' (No Model.)

F. MANNING.

MACHINE FOR DRESSING STONE.

WITNESSES:

I UNITE STATES ArtNr trice.

FRANK MANNING, OF ARDMORE, PENNSYLVANIA.

MACHINE FOR DRESSING STONE.

SPECIFICATION forming part of Letters Patent No. 332,916, dated December 22, 1885.

Application filed September 3, 1885. Serial No. 176,052. (No model.)

To all whom it may concern.-

Be it known that I, FRANK MANNING, a citizen of the United States, :residing at Ardmore, county of Montgomery, State of Penn- Sylvania, have invented a new and useful Improvement in Stone Dressing or Cutting Machines, which improvement is fully set forth in the following specication and accompanying drawings, in which`- Figure l represents a side elevation of a stone dressing or cutting machine embodying my invention. Fig.v 2 represents an end ele vation thereof.

Similar letters of reference indicate corresponding parts of the two figures.

My invention consists of a stone dressing or cutting machine provided with means whereby the cutting tools or bits are readily operated, the strokes of the hammer are powerful, and the cutting tools or bits may be adjusted in relation to the stone to be cut or dressed.

Referring to the drawings, A represents the main frame of the machine, the same having tracks B, on which is run a carriage or truck, C. Rising from said carriage is a frame, D, to the upright portions E of which is fitted a sliding head', F, to which is secured a number of cutting tools or bits, G.

To the head F are attached straps H, they ends whereof are secured to a spring, J ,which in the present case is of curved or elliptical shape, towhich, however, I do not limit myself. Connected with the spring .I is a rod, K, the upper end whereof is attached to the wrist-pin of a crank-wheel, L, whose shaft M is mounted on the frame D.

To one of the axles of the wheels of the carriage C is secured a sprocket or chain wheel, M, and to the shaft M is secured sprocket or chain wheel M2, which receives power from said wheel M by means of a chain, M3, it being noticed that when the carriage Gis moved the wheel M rotates with the wheel or axle to which it is secured, and motion is imparted to the shaft M, and by means of the connected parts to the head F and the tools or bits thereon, it being seen that the blows of the bits are powerfully imparted to the piece of stone beneath them. The frame D is freely supported on the carriage C, so as to be moved in a direction at a right angle to tracks B. To effect this movement, the carriage has secured to it rack-bars N, which engage pinions P, which are mounted on the frame D, so that by the rotation of said pinions P the frame? maybe moved in and out, and the tools or bits thereby adjusted in transverse direction relatively to the stone. Either ofthe sprocket-wheels M M2 is fitted to its respective axle or shaft by a feather, so as to be shifted when the frame D is transversely adjusted, whereby the chain M3 and said wheels M M2 remain in the same right line and true in relation to each other. The carriage has connected with it at opposite ends cords or chains Q, which are passed around pulleys Q on the frame A, and adapted to wind and unwind in opposite directions on a shaft, It, which is mounted on the frame A, and provided with a crank, R', for hand operation, or a pulley for operation by steam or other power. The frame A has depending fromit rack-bars S,with which engage pinions T below the frame A, so that the frame A may be raised and lowered, and the tools or bits adjusted in vertical directions in relation to the faceto be dressed or cut and the degree of penetration of the tools.

It will be seen that when the tools or bits are properly adjusted the shaft R is operated, whereby the carriage is moved in proper direction, the shaft M thereby rotated, and the spring J raised and lowered, so that the tools' or cutters are powerfully directed against the stone, and thus the latter is dressed or cut. The carriage is then run back by rotating the Vshaft R in reverse direction, and the tools are again adjusted in the desired direction, after which the carriage is advanced, the operations being continued as desired.

In lieu ofthe racks and pinions N P, I may employ a screw or screws for adjusting the frame D in transverse directions.

In lieu of the sprocket-wheels M M2 and chain M3, I may use pulleys and a belt or band.

Having lthus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a stone-dressing machine, the head F, havings bitsG, in combination with straps H, spring J, and rod K, the latter attached to IOO the wrist-pin of the crank-wheel L, the axle M, having sprocket-Wheel M2 mounted thereon, the carriage C, having sprocket-Wheel M mounted on an axle thereof, and chain M3, connecting said sprocket-Wheels, said parts being arranged and operated'substantially as and for the purpose set forth.

2. In astone-dressing machine, the frame A, with the track B thereon, in combination With the carriage C, Working on said track and provided with a rack-bar, N, the frame D, carrying the sliding head F, with bits G, and means for operating said head, the pinion P, having bearings in said frame D and meshing With said raclrbar N, the said rack-bar being placed transversely to the said track B, and means, substantially as described, for rotating said pinion P, substantially as and for the purpose set forth.

3. Ina stone-dressing machine, the frame A, having the track B, with the carriage G thereon, in combination with the frame D, having a sliding head, F, with bits G, and means,

substantially as described, for operating the same, the rack-bars S, depending from said frame A, the frame T, having guideways for said bars S, pinions T, having bearings in said frames T and meshing with said rackbar S, and means, substantially as described, for operating said pinion T, substantially as and for the purpose set forth.

4. The carriage C, having the sprocket- Wheel M mounted on one of its axles, in combination With the frame D, with uprights E, furnishing bearings for the shaft M, the latter having sprocket-Wheel M2 mounted thereon, crank-Wheel L on said shaft, head F, carrying bits G, and attached to said Wheel L by rod K, spring J, and straps H, either of the said Wheels M and Mz being secured to its shaft by a feather, substantially as and for the purpose set forth. i

FRANK MANN ING. lvitnesses:

H. P. McDoWELL, A. P. MoDoWELL. 

